Adjustable wrist-pin



I- (No Model.) v

RL. STONE. y ADJUSTABLE WRIST PIN.

No. 580,910. Patented Deo'. 1l, 1894.

MTM-:55 5: @Il l INVENTD R;

NITED. STATES 'PATENT Ormes.v

FLORENTTNE L. STONE, on BROOK-TON, vAssiGNoR or Two-THiRDs ToI THE Bouvn, CRAWFORDv a coMPANY CORPORATION, onV BOSTON, MAssAOutr SETTS.

ADJUSTABLE WRIST-PIN.

SPECIFICATION forming part of Letters Patent No. 530,910, dated December 11, 1894. Application ie January 3,1894. Serial No. 195,530- (No model.)

To a/ZZ whom it may concern:

Be it known that I, FLORENTINE L. STONE, of Brockton, in the county of Plymouth and State of Massachusetts, haveinvented certain new and useful Improvements in Adjustable Wrist-Pins, of which the following is a speciiication.

The object of the present invention is tov provide means whereby a wrist-pin may be 1o adjusted with respect to the center of rota- 'tion of its support while the latter is in mo,

tion, and by the motion of the support.

The accompanying drawings illustrate a construction for'carrying out the invention.

r 5 Figure 1 shows a front elevation with the wrist-pin proper in section. Fig. 2 shows a longitudinal section.

The letter a designates a disk or other rotary support for a wrist-pin, said disk being zo formed with a radial slide-way ot. A wristpin b is formed witha base which iits said slide-way, and by adjustment therein mayv have the length of its throw regulated. A screw c is supported radially in a bearing on z 5 the disk and passes through the wrist-pin, said screw turning loose in its bearing and engaging a screw-threaded bore in the wristpin. A spur-gear d is axed on the screw, and a spindle e is supported in a radial bearing on the disk and carries affixed to it a spurgear e in mesh with the gear d, and also has aflixed to it at its inner end within the tubular hub of the disk, a bevel gear e2. A spindle f is rotatively supported concentrically 5 with the disk and has affixed to its inner end a bevel-gear f in mesh with the bevel-gear e2. A spindle in the form of a sleeve g is rotatively mounted on the spindle fand supported in a bearing g4, and carries affixed to ita 4o bevel-gear g which meshes with the gear e2.

The spindle f has a hand-Wheel f 3 affixed to it, and the sleeve g has a handle g2 affixed to it. When neither of these handles is disturbed, the adjustment of the crank-pin re-l mains unchanged. lf it is desired to adjust the wrist-pin in one direction, the handle f 3 is taken hold of and held and thus the gear f2 is stopped which causes the gear e2 and the radial spindle e to turn and consequently the the position desired. To adj ust the wrist-pin in the opposite direction, the handle g2 l-is taken hold of and held, which produces rotation of the radial spindle e in the reverse direction, and moves the pin in theopposite direction from before. Thus the wrist-pin may be adj usted to obtain the desired throw Without stopping the rotary support, but by employing the rotary motion of the saine to effect the desired movement of the wrist-pin. 6o It is evident the invention may be carried ont by-other means than here shown and is not limited in this respect.

Having thus explained the nature of the invention, I declare that what I claim as new, and desire to secure by Letters Patent, is-

1. The combinationof a wrist-pin movablel toward and from the center of its support, a screw engaging said Wrist-pin a radial spindle on said support, gears connecting said 7o spindle with theV said screw, a spindle journaled concentric with the rotary support and having a handle, and gearing connecting said concentric spindle with the radial'spindlo.

2. The combination of a wrist-pin movable 7 5 toward and from the center of rotation of its support', a pair of handles independently journaled concentric with said support; and adjusting connections between each of said handles and the wrist-pin rotatively connect- 8o ing the handles with the rotary support when said handles are free to turn, and effecting movement of the wrist-pin toward or from the center of rotation, according as one handle or the other is held from turning, substan- 8 5 tially Aas described.

3. The combination of a wrist-pin movable toward and from the center of rotation of its support, two spindles both rotatively supported concentric with the said support, and 9o gearing operatively connecting the spindles with the wrist-pin.

4. The combination of a wrist-pin movable toward and from the center of rotation of its support, a screw engaging said wrist-pin, and g5 a pair of spindles rotatively supported concentric with the said support, and operatively connected with said screw.

screw, and thereby the wrist-pin is moved to 5o Y 5. The combination of a wrist-pin movable In testimony whereof I have signed my 1o toward and from the center of rotation of its name to this specication, in the presence of support, a screw engaging said wrist-pin, a two subscribing witnesses, this 15th day of spindle extending radially of the said sup- December, A. D. 1893.

5 port and geared to the said screw and carrying a bevel pinion, and two spindles rota- FLORENTINE L STOINE' tively supported concentric with the support Witnesses: and each carrying abevel-gear in mesh with F. M. BIXBY,

that on the radial spindle. W. F. KANE. 

